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When someone stirs cocoa powder into hot water or hot milk, the cocoa changes from a _____________ .
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
Which of the following mixtures is NOT an example of a substance?
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
Which of the following visual displays would be best for describing the percentages of different gases in the atmosphere?
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
The atmosphere of Earth is an example of a _________ solution.
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
When Rutherford performed his metal foil experiment, he was surprised that most of the alpha particles ___________.
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
When a hydroxyl group is substituted for a hydrogen atom in a hydrocarbon, what type of molecule results?
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
SI units are useful because they are all related by multiples of ______.
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
How many atoms of calcium are in a unit of calcium phosphate whose formula is Ca3(PO4)2?
10
circle graph
heterogeneous mixture into a homogeneous mixture
an alcohol
pizza
gas-gas
three
passed straight through the foil
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